I've been going by the ratios on the labels of the nutrient bottles (4ml/1l). I water my plants every 2nd day with the nutrients.About a week into preflower all of the heads drooped down and some died. I have halved the nutrient water (2ml/1l). When should I use water with nutes?:sweat:

Hi,
seems to me the growing medium your using was already charged with nutrients, so feeding the full recommended dose (which by the way, you never should do) it had no need for the extra, and at full dose, you're asking for trouble. 1- Never go by the recommend dose on the label always start with 1/2 or 1/4 strength and build it up, that way you can see the plants tolerances of what you're growing, and less is always more growing. 2-Using a soil medium, chances are you've already got nutrients in them to last the plant around 4-5 weeks depending on what mix you have. 3- Don't overwater, less is more.. you can add but can't take away, let your medium dry properly before next watering.
Lastly, my solution. Let your medium dry up, giving it a few days. Check it by poking your finger into the soil, if its dry you wont have any deposit on your finger when you take it out and it wont be wet. If it is you'll feel it and be left with a wet finger. Once its dry, flush out the nutrients you've put in and start again with just plain pH'd water until she shows you a start of a deficiency and needs nutrients which you can then start to lightly feed, lightly being the key word ;) hope this helps